Automatically-operated fence gate



-May 20, 1930. F. ROSE ET AL 1,759,207

AUTOMATICALLY OPERATED FENCE GATE Filed Aug. 31, 1928 Ja fl/ fz/i/iflrPatented 'May 20, 1930 PATENT OFFICE F E e. nose AND JOHN H. MURRAY, onROGKYFORZD, COLORADO g AUToMArIcALLY-orEaAr n nnncn GATE pl qa' q fi dAu s 31. 1 2 S ria .NO- 3113,17

This" invention relates to an automatic fence gate and has for itsprincipal object the provision of a roadway gate which will beautomatically opened by the weight of an 6 approaching automobile.

r 16 totie the entire structure together.

' Another object of the invention is to so construct a gate that it willremain-open until the automobile has completely passed the turn to theclosed position. i

A further object of' the invention is to provide a gate of thischaracter which can not be operated by cattle or other animals.

I Other objects and advantages reside in the detail construction of theinvention, which is designed for simplicity, economy, and effithe nearside of the enclosing box removed.

In this View the full closed position i i di cated at A, partially openat B a and fully open at C.

In installing the improved gate a box is imbedded in the roadway andacross the fence line which is illustrated at 11. VThe sides of the box10are raised as illustrated at 12, to act to guide the automobile wheelsupon a runway 13. "At each side of the fence, and at opposite sides-ofthe box 10, a hinged board 14 is placed for a vportion of the runway thehinges being indicated at 23.

The gate proper maybeofany desired construction such as a seriesofvertical bars 15 separated by separating blocks 16. The gate is hingedupon an axle bar 22 which may be passed throughthe bars 15 and the blciellis e gate is free to swing to a horizontal position at each side ofthe fence within the box 10.

The gate is normally held perpendicular axle bar 22. '19 connects theelevated extremity'of one Otto by springs 17 of substantially equaltenesion," The springs 17 are connected within 1 the extremities of thebox 10 and connect which-is rigidly secured to the gate in a position tocause the two springsto pull in opposite directions in directalignmentwith the At each side of the gate, a link the hinged boards 14 at anangle to theiga'te bove the axle bar 22. p

In operation, an automobile is driven on to the runway 13, as the leftfront wheel rolls upon the hinged board 14, it will depress this board,as indicated in broken line at -B in Fig. 2, causing its link 19 toswing the gate awa from the car and downwardly intothe box 1 0 to theposition' C. As the left front wheel of the automobile'leaves the firsthinge board 14:, the front right wheel will be rest upon the second oropposite hinge board 14, which will act "to maintain the gate in its Ilowered position. The right rear wheel final- .ly releases the secondhin'geboard'after al lof the automobile wheels have left therunway andthe automobile is clear of the gate. The springs 17'wi l1the-n returnthe'gate to its normal vertical position.

, It is desired tocal'l attention to the'fact that both springs operatesimultaneously reg-ard-less of the direction the gate swings;

their tension increases equally; and both are provided with aiever armfor 'c'lo'sing the gate which increases in length as the-gate opens. Theshape of the lever arm 21 is not essential since any lever constructionwhich will maintain the spring attachment points inv alignment with andspaced from the "bar whenthe gate is openw'ill operate satisfaetoril'y:The gate strikes 'no obstruction in closing. It simply swings back toothenormal'po'sition, cushioned by the springs 17,

so that there is renatally nothing to b'e eome damaged by the continualeperation or the gate.

If desired, to prevent the hin e board from 'being depres ed tee rapidlleaf.

- spring-s eanbeseeured to these boards to eat as a cushion ti lerefer.Ordinarily, howo 7 that theywill prevent the gate from opening ever,these springs can be eliminated since the Springs 17 increase theirtension at this time and willactas a cushion for the hinge boards. I

It will be noted that the gate always swings away from the automobileregardless of the direction approached.- The open box 10'prewent-Scattle or other 'animals'from approaching thegate and the angularlyplaced hinge boards 1d prevent an animal from forcing his 7 way betweenthegate posts and the gate, since any-weight upon these'boardswillcauseth'ern to move downwardly, frightening the animal away.

The tension of the sprin s 1 7can besuch L ,underlesslthanthe weight ofan automobile, 1 therefore, the gate could not ,be opened byan V animalor aiperson standing upon the hinge 20' v r I r ingpdevices may beplacedin theline of the boards14. QTurn buckles or similar'adjustspringsl'T,if'desired toadjustthe tension claim without departingfromthe spirit oftheinvention; v

' -1. An automatic fence] gate comprising: a v

- thereof; fItisnotessential that the tension 7 of fi e two springs beequal since the gate will out of commission.

stillj function with one ofthesprings entirely While a specific form ofthe improvement ha s been described and illustrated herein, itisdesiredto be und'erstoodthat the same may bevariedwithin the scope ofthe appended Having thus described the invention, what we claim anddesire secured by Letters Patent gate hinged across its lower extremityso as with the hinge ofsaid gate whenthe latter @is in theperpendieularposition and acting wout ofhorizontal alignment with saidhinge I "when Said gate is in y other positionfthai "P pendicular, i r sl e I 2.- An automatiofence gate tor a roadway comprising: a gatepivoted below said roadway'soasto swing to either side ofsaid fence andtoa' position. below said'ro'adway; depressible members insai d roadway;rigid; -members connecting saiddepressible members with said gate sothat weight on saidde-' pressi'ble members will push said gate belowtion;and means operable b'y the weight of vehicle for swinging said gateto said latter position, said means comprising a board-like memberhinged at its one extremity and raised at I link extending downwardlyand forwardly from the raised extremity to its other extremity and a} a;pivot on said gate, there being a 'similar construction at each side ofsaid gate, so, that downward movement of said hinged boards will pushsaid gatev downwardly and forwardly to a substantially horizontal posi 7tion; y v

74. An automatic fence'gate for a roadway comprising a gatepivoted belowsaid road:

to support a vehicleand be depressed by the weight thereof; rigidmembers connecting: v

said depressible members withjsai'd'gate at'a forward and downwardanglesothat weight 8o way so as to swlngto e ther side of said fence r and toa position below said roadway de- ,pressible members in said roadwayarranged on said depressible members will pushsaid" gate away from saidvehicle and below said roadway. 3 e p In testimony whereofl we afiix oursignatures. v

r FRED G. ROSE.

JOHN H. MURRAY.

'o Hsaid-'roadway,;saidrigid members being c'on-' returningsaid gate-tothe verticalgposijtion.

3. Anfautomatic fence gate comprisingzfa V gatehinged acrossit-s lowerextremity so as 7' to, swing .to a substantially horizontal posilneotedbetween'said gate and said depressible r'members'at aiforwa'rd'anddownwardangle 'sothat said gate willbe forced to swing away from an.approaching vehicle; and means for

